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Crystallization behavior and kinetics of calcium carbonate in highly alkaline and supersaturated system
Zhu, Ganyu1,2; Li, Huiquan1; Li, Shaopeng1; Hou, Xinjuan1; Xu, Dehua1,2; Lin, Rongyi1; Tang, Qing1
2015-10-15
Source PublicationJOURNAL OF CRYSTAL GROWTH
ISSN0022-0248
Volume428Issue:OCTPages:16-23
AbstractIn causticization process of Na2CO3-Ca(OH)(2), which is a liquid-solid system with high alkalinity and supersaturation, agglomeration and morphology instability of CaCO3 crystal have greatly limited its application. To deeply investigate the internal relations between crystallization process and condition control in this system, crystallization kinetics was conducted in a continuously operated crystallizer. The kinetic equations of growth rate, nucleation rate and agglomeration kernel were correlated in terms of power law kinetic expressions based on the agglomeration population balance equation. Magma density and mean residence time exert a considerable effect on crystal growth, nucleation, and agglomeration. Crystal growth and nucleation are surface-integration-limited and size-limited, respectively. Agglomeration increases with increasing mean residence time, but the increase in magma density break down the agglomerates by frequent and energetic collisions. Through the study, crystallization behavior of CaCO3 in causticization system was revealed, and the particle size and morphology were efficiently predicted and controlled. These results can provide a basis for understanding the design of the reactor. (C) 2015 Elsevier B.V. All rights reserved,
KeywordKinetics Morphology Causticization Calcium Carbonate
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jcrysgro.2015.07.009
Indexed BySCI
Language英语
WOS KeywordCONTINUOUS MSMPR CRYSTALLIZER ; PRECIPITATION ; NUCLEATION ; GROWTH ; AGGLOMERATION ; MORPHOLOGY ; ARAGONITE ; WATER ; FIELD ; ASH
WOS Research AreaCrystallography ; Materials Science ; Physics
WOS SubjectCrystallography ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000360501200003
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19510
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Ganyu,Li, Huiquan,Li, Shaopeng,et al. Crystallization behavior and kinetics of calcium carbonate in highly alkaline and supersaturated system[J]. JOURNAL OF CRYSTAL GROWTH,2015,428(OCT):16-23.
APA Zhu, Ganyu.,Li, Huiquan.,Li, Shaopeng.,Hou, Xinjuan.,Xu, Dehua.,...&Tang, Qing.(2015).Crystallization behavior and kinetics of calcium carbonate in highly alkaline and supersaturated system.JOURNAL OF CRYSTAL GROWTH,428(OCT),16-23.
MLA Zhu, Ganyu,et al."Crystallization behavior and kinetics of calcium carbonate in highly alkaline and supersaturated system".JOURNAL OF CRYSTAL GROWTH 428.OCT(2015):16-23.
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